Tracking device



FIG. 1 is a top, front, and right side perspective view of a tracking device;

FIG. 2 is a bottom, rear, and left side perspective view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a front elevational view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The broken lines in the drawings showing portions of the tracking device are included for the purpose of illustrating environmental structure and form no part of the claimed design. 

CLAIM The ornamental design for a tracking device, as shown and described. 